The Liars are about discomfort. It’s in the way singer Angus Andrew turns his tiny couplets into mantras and his mumbles into quiet, sometimes menacing chants. Andrew doesn’t play his guitar so much as he plays with it: He flicks at the strings, strums them haphazardly, and fiddles with the amp knobs to achieve maximum sustained arcs of drone. The Liars play with noise, smearing it across their songs—but, increasingly, the trio is finding the sweet spot between abstraction and pop. The band’s self-titled third album, released last year on Mute, contained not-so-obvious attempts at accessibility—and it worked. Show opener No Age offers a similar philosophy when it comes to song structure. Only its sound operates more openly: Instead of dwelling in dark corners, the band, perhaps taking its cue from its Los Angeles home base, uses noise for more ecstatic purposes. The Liars perform with No Age at 9 p.m. at the 9:30 Club, 815 V St. NW. $15. (202) 393-0930.